BITTER rivals Kevin Rudd and Tony Abbott will call a momentary truce and join a high-powered parliamentary delegation to London next month for talks about Australia's links with Israel and Britain.

The cross-party talkfest, Australia-UK-Israel Leadership Dialogue, organised by the Melbourne businessman Albert Dadon, will include political, business and media delegates from the three countries.

The former Israeli prime minister Ehud Olmert, who is flirting with a return to politics, is also expected to attend, with Liberal frontbenchers Christopher Pyne and Kevin Andrews.

The visit will mark another step onto the world stage for Mr Abbott, following his recent trip to Indonesia where he had an audience with President Susilo Bambang Yudhoyono.

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The Opposition Leader had kept a low profile on foreign policy questions, but recently has slowly fleshed out what he has dubbed a ''Jakarta not Geneva'' approach to the world under a Coalition and earlier this year visited Washington and Beijing. But he has also spoken in praise of ''Anglosphere'' countries.

Mr Rudd, a former diplomat, has kept up a busy schedule of international engagements since quitting as foreign minister in February, including delivering a lecture last month at Oxford University, Mr Abbott's stomping ground from student days.

The leadership dialogue originally began in 2009 with Australian and Israeli participants, with Julia Gillard the most prominent delegate when she was deputy prime minister.

The meeting was expanded to include Britain and in January was held in Jerusalem. It is one of a growing number of private diplomacy ''leadership'' initiatives on the Australian calendar, that relate to countries including the US, Canada and New Zealand.

The 11 Australian politicians on the list to attend the talks in London include the Labor backbenchers Michael Danby and Mike Kelly, and the Liberals Kelly O'Dwyer and Josh Frydenberg.